<template>
	<div class="about">
		<h1>{{id ? '编辑' : '新建'}}分类</h1>
		<el-form label-width="120px" v-on:submit.native.prevent="save">
			<el-form-item label="上级分类">
				<el-select v-model="model.parent">
          <el-option
						v-for="item in parents"
						v-bind:key="item._id"
						v-bind:label="item.name"
						v-bind:value="item._id"
					></el-option>
        </el-select>
			</el-form-item>
			<el-form-item label="名称">
        <el-input v-model="model.name">
				</el-input>
      </el-form-item>
			<el-form-item>
        <el-button type="primary" native-type="submit">保存</el-button>
      </el-form-item>
		</el-form>
	</div>
</template>

<script>
/* eslint-disable */
export default {
	data(){
		return {
			model:{},
			parents: []
		}
	},
	// 接收id，尽可能与路由解耦
	props:{
		id: {}
	},
	methods:{
		async save(){
			// console.log(this.id)
      let res
      if (this.id) {
        res = await this.$http.put(`rest/categories/${this.id}`, this.model)
      } else {
        res = await this.$http.post('rest/categories', this.model)
			}
			// const res = await this.$http.post('categories', this.model)
			// push要加/ 斜杠， $http的put，post等操作不用加斜杠，因为http.js中baseUrl设置了baseURL:"http://localhost:3000/admin/api/"
			this.$router.push('/categories/list')
			this.$message({
        type: 'success',
        message: '保存成功'
      })
		},
		async fetch(){
      const res = await this.$http.get(`rest/categories/${this.id}`)
      this.model = res.data
		},
		async fetchParents(){
			const res = await this.$http.get(`rest/categories`)
			this.parents = res.data
		}
	},
	created(){
		//	获取所有数据（编辑），
		this.fetchParents()
		// 存在id的情况下才执行fetch事件（编辑）
    this.id && this.fetch()
  }
}
</script>